交联锯屑吸附废水中铀的实验研究

Adsorption of U(VI) from waste-water by cross-linked sawdust

以交联锯屑作吸附剂来吸附某铀矿废石场的含铀废水,考察了吸附剂用量、吸附时间、废水pH值和吸附温度对吸附效果的影响。结果表明:交联锯屑对废水中铀有很好的吸附效果;当吸附剂粒径为0.3 mm、吸附剂用量为0.4 g、pH值为5.5、吸附时间为90 min时,铀的去除率达到了93%以上。将废弃物锯屑改性后用来吸附废水中的铀,达到了"以废治废"的目的。

The cross - linked sawdust was used to adsorb uranium from wastewater in a tailing dam of uranium mine. The effect factors such as the adsorbent dosage, contact time, values of pH and temperature with batch experiments were investigated. The results showed that the cross - linked sawdust had very excellent adsorption capacity on U （ VI）, and the maximum removal efficiency reached 93% when the particle size was 0.3 ram, pH was 5.5, and the adsorbent dosage was 0.4 g in 50 mL solution. The reatment of wastes with waste by using modified sawdust to adsorb uranium from waste - ware was realized.